package chapter03.Example03;
class Student{
    String name;
    int age;
    void read(){
        System.out.println("大家好,我是"+name+",年龄"+age);
    }
}
public class Example03 {
    public static void main(String[] args) {
    Student stu = new Student();
    stu.name = "张三";
    stu.age = -18;
    stu.read();

    }
}
